How much does the 2003 INFINITI Q45 cost?

The 2003 INFINITI Q45 has a starting MSRP of $52,000, ranging up to $61,600 for the top trim. Trim pricing includes 45 Luxury from $52,000; 45 Premium from $61,600.

What is the fuel economy of the 2003 INFINITI Q45?

The 2003 INFINITI Q45 achieves up to 18 MPG combined (EPA estimate), depending on trim and configuration.

How much cargo space does the 2003 INFINITI Q45 have?

The 2003 INFINITI Q45 offers up to 13.6 cubic feet of cargo capacity, depending on trim and seating configuration.

How many trims does the 2003 INFINITI Q45 come in?

The 2003 INFINITI Q45 is available in 2 trims across Sedan body styles with rear wheel drive.

2003 INFINITI Q45

2 trims · Sedan

Starting MSRP

$52,000 – $61,600

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Pricing

How much should you pay for the INFINITI Q45? Select a trim to update purchase and lease estimates.

MSRP by trim

Select a trim to update the payment estimates. MSRP is for each trim's base configuration and excludes destination, taxes, and options.

Purchase information

Based on 45 Luxury

Total price (45 Luxury MSRP)

$52,000

Typical monthly

$1,030/mo

Avg. APR

7.00%

60-month loan estimate for good credit (rates as of 2026-08-23). Not a credit offer; actual APR varies by lender, credit, and dealer.

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Compare 2003 INFINITI Q45 trims

45 Luxury
MSRP
$52,000
Fuel economy (city/hwy)
16/22
Horsepower
340 hp
Torque
333 lb-ft
Engine
4.5L V8 gas
Seating
5
Drivetrain
RWD
Cargo (cu ft)
13.6
Max towing
—
45 Premium
MSRP
$61,600
Fuel economy (city/hwy)
16/22
Horsepower
340 hp
Torque
333 lb-ft
Engine
4.5L V8 gas
Seating
5
Drivetrain
RWD
Cargo (cu ft)
13.6
Max towing
—

Compare 2003 INFINITI Q45 trim specifications
Spec	45 Luxury	45 Premium
MSRP	$52,000	$61,600
Fuel economy (city/hwy)	16/22	16/22
Horsepower	340 hp	340 hp
Torque	333 lb-ft	333 lb-ft
Engine	4.5L V8 gas	4.5L V8 gas
Seating	5	5
Drivetrain	RWD	RWD
Cargo (cu ft)	13.6	13.6
Max towing	—	—

Manufacturer specifications by trim and drivetrain. Same trim names with different MSRPs are distinct FWD/AWD (or other drivetrain) configurations from the catalog. MSRP excludes destination fees, taxes, and dealer-installed options.

Full specifications

Engine & drivetrain

Engine type: 45 Luxurygas
45 Premiumgas
Fuel type: 45 Luxurypremium unleaded (required)
45 Premiumpremium unleaded (required)
Cylinders: 45 LuxuryV8
45 PremiumV8
Displacement: 45 Luxury4.5 L
45 Premium4.5 L
Horsepower: 45 Luxury340 hp
45 Premium340 hp
Torque: 45 Luxury333 lb-ft
45 Premium333 lb-ft
Transmission: 45 Luxury5-speed shiftable automatic
45 Premium5-speed shiftable automatic
Drivetrain: 45 Luxuryrear wheel drive
45 Premiumrear wheel drive

Dimensions

Body type: 45 LuxurySedan
45 PremiumSedan
Doors: 45 Luxury4
45 Premium4
Seating: 45 Luxury5
45 Premium5
Length: 45 Luxury199.6 in
45 Premium199.6 in
Width: 45 Luxury72.6 in
45 Premium72.6 in
Height: 45 Luxury58.7 in
45 Premium58.7 in
Wheelbase: 45 Luxury113 in
45 Premium113 in
Ground clearance: 45 Luxury5.7 in
45 Premium5.8 in

Capacity & weight

Cargo capacity: 45 Luxury13.6 cu ft
45 Premium13.6 cu ft
Max cargo capacity: 45 Luxury13.6 cu ft
45 Premium13.6 cu ft
Curb weight: 45 Luxury3,977 lbs
45 Premium3,977 lbs
Fuel tank: 45 Luxury21.4 gal
45 Premium21.4 gal

Fuel economy & EV

Combined MPG: 45 Luxury18
45 Premium18
City MPG: 45 Luxury16
45 Premium16
Highway MPG: 45 Luxury22
45 Premium22

Full specifications by trim
Spec	45 Luxury	45 Premium
Engine & drivetrain
Engine type	gas	gas
Fuel type	premium unleaded (required)	premium unleaded (required)
Cylinders	V8	V8
Displacement	4.5 L	4.5 L
Horsepower	340 hp	340 hp
Torque	333 lb-ft	333 lb-ft
Transmission	5-speed shiftable automatic	5-speed shiftable automatic
Drivetrain	rear wheel drive	rear wheel drive
Dimensions
Body type	Sedan	Sedan
Doors	4	4
Seating	5	5
Length	199.6 in	199.6 in
Width	72.6 in	72.6 in
Height	58.7 in	58.7 in
Wheelbase	113 in	113 in
Ground clearance	5.7 in	5.8 in
Capacity & weight
Cargo capacity	13.6 cu ft	13.6 cu ft
Max cargo capacity	13.6 cu ft	13.6 cu ft
Curb weight	3,977 lbs	3,977 lbs
Fuel tank	21.4 gal	21.4 gal
Fuel economy & EV
Combined MPG	18	18
City MPG	16	16
Highway MPG	22	22

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2003 INFINITI Q45 FAQ

How much does the 2003 INFINITI Q45 cost?: The 2003 INFINITI Q45 has a starting MSRP of $52,000, ranging up to $61,600 for the top trim. Trim pricing includes 45 Luxury from $52,000; 45 Premium from $61,600.
What is the fuel economy of the 2003 INFINITI Q45?: The 2003 INFINITI Q45 achieves up to 18 MPG combined (EPA estimate), depending on trim and configuration.
How much cargo space does the 2003 INFINITI Q45 have?: The 2003 INFINITI Q45 offers up to 13.6 cubic feet of cargo capacity, depending on trim and seating configuration.
How many trims does the 2003 INFINITI Q45 come in?: The 2003 INFINITI Q45 is available in 2 trims across Sedan body styles with rear wheel drive.